Why is that helicopter flying so low?

If you've seen a helicopter flying low over towns in the central part of the state, there's no need to be concerned. In fact, ...
Nikkei Asia

Kawasaki Heavy tests prototype autonomous helicopter as 'flying truck'

TOKYO -- Japan's Kawasaki Heavy Industries on Monday tested an engine-powered autonomous helicopter designed to carry heavy loads in mountainous areas, taking another step in the race to fly cargo ...